Rotary rectifier



March 23 1926. 1,517,553

w.; J-EB'AKER ROTARY RECTIFIER Filed Sept. 14, 1920 2 Sheets-Sheet 1 March 23 1926.

W. J. BAKER ROTARY RECTIFIER Filed Sept. 14, 1920 2 Sheets-Sheet 2 WW Wm INVENTOR B A G FJ' ATTO RN EY lithe; same segment of the colninutator during approximatelythesa me interval of time. The

are of contact otea-chpainof brushes 54: and

pperfsegn 'entsli in 3 t th' outerf ends of the her arms ng, 1 however; insulated from A g has $43. 5. Clamping 11:0 tde'dito per nit"adjustment eoinmuf secureds fwpreferably nuts.

41iseq1 1alto the areuatef distance from the rear end ofbrush- 1:54 to thefforward end of brusli.14:1.' I Obviously,f zturning' of the screw.

57; causes eircuniferentialffniovernent o'f the "rocker elenient-;l5l and: with :it; thferibrushes' I p ".154. T-his either .--i-noreases ordecreases; the

erocker a1 ins-16L The studs 45 extend at arms 346 and themselves arcof contaet of the aidj a cent bi'ushes 4E1 'a54,=

fwhich electrically;eform *a single cbrush;

Proper'adjustmentis lnadeby advancing or s43 1 upon the: studs A55.

'.;retarding,the' brushes- 5.4 so to; remain in;

contact'with a copper segment o f'the co1n.

mutator onlycduringsolmuch otits travel fi aslthe segment "maintains its potential 7 above rthe counter M. of theseries of batarins lgjfornlsno partofthelpresentfinvenv V V p a segment i approaches; open ng the :c1rcu1t;

The brush-1holdersA2 illus- Lm isi'dered's as' merely indicansisfshowi Oppositel brushesf::etl are connected Y polarity"is obtained'from opposite..brushes.- Preferably; theiorward ends of: the brushes i engannulani 1neniher: }'5l.}is seated "fin the groove and thus i may be turned relatlve ltoatheg-rocker."arms 1&6. i pith t a convenient ppoint ,---the.annularfmember 51 hasa lug 56 which engagesigang adjusting screw :57: I I I scre j a1SQ ipasses' throughoneLof the qij roeker a rn is-46. f .'I-he annular rocker member 51 carries a series-of studs-52 correspondmg to the studs-t5fand having.ashort'length.

I desirable' -jfvayfupontheiiouter.endsmf the f studs 52 'and.parry brushes 54. Springs 55 "brushes 54: fare rectangiilarl though smaller 1 than the brushes 41; and areqset so that one longitudinal; edge; thereof lies, in a planefrai 'di a1 with. respect; to the Idisk commutator.

. tion, and heneenopartioular brush securing" toeaeh otherby 'cableslas. shown in Figures '1' Q a 5 so: that direct "current' of? the same- Each go'fthe brushes 54abears 5 upon the face teries'beingcharged; Then the insulating The next'alternation isfactediupon in a Sinai- {.lar "inann'er, .both ialternations ofthe cycle r se-ti anss on a t ushes altare' eetangular, as

In thefjform i-illustratedin Figures a being rectified, but only so much otthe; tee

tifie dfcurrent being ledv ofiirmhthe brushes Y i V greater. than the potential I of the. batteries. i

as has a voltage V and 4, the; alternating current islecl into the re'c- .tifier from; the .rtrans'former bymean s of.

-. -.-brushesf58,a nd 61-,-the-.brushfbS making con- 7 tact with slip ring 3 l 'iandjthebrush-61 pressing against the periphery of slip ring 535; Thebrushes 58 and 61 are-maintained L -framecomprising=the'arn1s46. Y 4 In theiform shown in Figures 1,12

ring 63..is secured to the shaft 225so as to ig-i'otate'fwitli' the-commutator. 361 and interpressed against; the peripheries "Ofthe slip I rings. with; some tension. by springs '59 and :62, respectively, these springs being secured vided on the outeredge ofeach-extension 50. one of these being's'hown in Fig. 3. The T 2 arms 60 are c onneetedwith the main-rocker at...thei'routerends upon clamping arms 60,

and =5,

"rupters Wand One'lead'froinlthetrans I and-'29, i which are. electrically parallel, and segments an df25! of interrupters W" and Which-areelectricallylcomiectedito each .oth'er butxinsulated froln the shaft 22; to 'al- 1 '.-'press brushesMia'gainstthelinner face of the i 0mn' utatorq36, *AsJseenzin Fig. 3,*.the-- V g V *of the battery 20, While the other lead is i connected. through a brush 64 and ring 63 torthe' other segments of the commutator,

former is" eonnected through the: brushes .27

ternate --s'egmentsof the ucoinniutator,' and thence through brushes 41 and 54: to one pole and thence 'tothe other pole ofthe battery.

Asz'the-shaft 22 rotates'ftherefore, thealterof thecoinInutator-opposite from that upon X which brushes L41 bear: llhe' relative positions of th'e brushes,2on- {opposite sides of the com l nearest brush 4E1 onytheopposite. side of the i icominutator by anyc onv'enientimeans as by Enable shown diagrammatically in Figure 1. Thus, :adj acent; brushes 54 and 41 together {form asingle brush,lsincethe two bear upon fage'passing overcthe 'micalseglnents so that Jtages of the apparatus which has been de scribed will; :b'e readily understood. The w vide 45 insulation prevents the battery i from discharging" back through they j system,

1-20 nating'current is-fed through: alternate seggments: of Jt-he commutator 36, I and the recti- I g fied. current isiinpressed on the'battery. i

' finutatorare also disclosed in Each:

: brush '54 electrioally connected With the- ..-.T he "theoryof operation andthe adva11-,

all the brushes during the period of low volt- -ductive segmen'tslthereo fi' 14; Av ecti fymg dev ce comprlsmg a synjchi'o'nous motor, a colminutator' I rotated by to the inter-- 'the 'shaftfof said motor} a orimuyinterrnpter and a secondary interrupter likewise, rotated and electrically" connected to ing' current to? the interrupters, the source s'aid' flalternating current also providing the" pow' er bywhichrhe motor is run, and

-; means connecting the primary interrupter V lto;certa-infotthe conducting segments ofthe commutator, whereby the alternating c current. is'Qrectifi'ed and pulsating direct-current l: may be leadj off 1 byineans or brushes {in con- 1 tact withthe' commutat-or.

re ti i id r i:y.e l a comb nation, a synchronous motor, a diskcommutatorf' mounted on the 77 motor shaft and composedof-segments which are alter nately conductors and" non conductors, a primary interrupter and afsecondaryinterrupter mounted' on saidfishaft and each comprising a disk composed-of segments alternately conductorsiand; non-conductors, the

conductive "segments'fifof' the interrupters v being "electrically connected to each. other,

- and to at leastgtwoscgm'ents of the com .-mutator.;

v e 6,. A rectifying device, ,Qcomprising, in: combination, a primary interrupter,.- a secondary interrupter T "and" a commutator, a synchro'nou's motor-for rotating all of said elements; -Tin ,.;unison,' a Ibrushv conducting al 7 t'ernating current rto said j; primary interrupter, a :second brush jl 'cfonducting current 1 from the same. sourceato-gthe secondary in- --terrupter bnt set so as to make and break the urrentfin; advance of the first.,men- V tioned brush,thel twobrushes being con-' nectedinuparal1el," and means electrically f connecting-1 al'l' co'nductive' parts of both interrupters with each v ther and with certain of the segmentsof the commutator.

" secondary!v interrupter electrically connected 'toeachother, a co-mmutatona synchronous" motor for-{rotating"fsaid interrupters and commutator in :'unison, said secondary i interrupte'r being mounted on the motor shaft I lndreai ily remova l h fo i and brushes f 00- conducting the alternating current to the -p'riinary, and'the secondary, interrupters parking islocalized secondary {in QtBi'IQPtErgQ-g(w; 2-

S-VdAfA-rectifyingdevice,"comprising, in: combination, {a primary interrupter and v secondary interrupter, a-i commutator, a syn? J chronousin'otorfrotating all-0f said parts in unison, said: primary and secondary intera't a I being electrically connected; the secondary i g V I interrupter being considerably thinner than feach" other,}means "for delivering alternat-" the primary-interrupter, abrush conducting alternatinglcurrent to each interrupter disk, the brush for the secondary interrupter being held so as to make-and break the current later than the brush to the primary inter-.

.rupter, and electrical conducting means mounted on the motor and comprising a fixedand a movable rockerpart, a; set of,

sow

brushes? carried by each rocker. part with eachset bearing against the 'oppositefaces of the commutator, and ineans for effecting adjustment of the movable rocker part relative t'othe fixedrocker part. p y

IlO.'In -rectifying apparatus a disk commutator, a synchronous motor rotating the commutator, acompound rocker 'adjustably mounted on the ,motor and comprising a fixed and a movable :rocker part, "a set of; Jbrushes carried by each rock'er part with each setbearing against the opposite faces against the same'sc'ommut'ator jsegment;

'ofthe commutator, the brushes of one set i opposing'the brushes ofthe other set; so that 1 each brush has ,a' corresponding brush on the other, side' of the commutator bearing means for electrically connecting opposed Y fixed rocker: part. i

fmutator, a synchronous motor rotating the;

commutator a compound rocker adjustably amounted on the motor and comprising a '7; A' .rectiltyingf' device, comprising, in

combination, a primary interrupter and-a1 fixed andca movable rocker part, a set of 11. In rectifying apparatus, a; disk com ,brushes, and means for ,efiecting adjustment of the movable rocker part relative to the g brushes carried by each rocker part with each set bearingagainst the opposite faces Y of the commutatonlthe brushes-oi one set ofthe other set and the forward edges of all,

being considerably largeritha'n t the brushes the vbrushes extendingin planes I substantially radial with respect'to the commutator, I

opposed brushes being connected "in series" with each other, andmeans for effecting adjustm ent of tlie'movable rocker fpart rela tive to the fixedrockerfpart.

12.- Bectifyingapparatus including a V 1 ommutator, a fsyj a chroriousimoifiqf i:otxfiin.g fthe cdn amiitator, a compound. "rocker": adj use 'ably mounted on theflmtor hiihiand 'i-nglud ":ingitwo parts, one movable rglativ'e ;tQ;I;t'he other,- the fixed r'ookerpart 'havingfe xtem' "sio'n arms Bitch provided. with & slot, v the moiable rocker; "palrt including-[311;] anniil'zir member seated 'in the' slots Of th'e gxtensiqn-i ar s; a" slow motion 'alj'usti'ngTele nenLt Cldnnectedfto brothrpagr ts of the rockeri to gfiegti' the brushes of; each set bearing at ioipposqd points againsfiflp opposite face s ofthe' coma ture; v 

